Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Mozilla Support में खोजें

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Email will not send

  • 1 प्रत्युत्तर दें
  • 0 यह समस्या है
  • 1 view
  • के द्वारा अंतिम प्रतियुतर david

more options

After installing the latest version of Thunderbird yesterday (1-27-2024), Thunderbird can no longer send out any emails on my PC using . I am a retired software engineer and contacted my service provider and after 2 hours of trying to find the issue, we have no clue. My email works fine through my service provider using my Apple products, and an alternate mail program on my PC, but not Thunderbird. Everything worked fine before the latest update. I did reboot my computer last night, and was able to send out 1 email, then it again stop sending. The following is the error message it always sends:

Sending of the message failed. An error occurred while sending mail. The mail server responded: <ec2-15-181-97-27.compute-1.amazonaws.com[15.181.97.27]>: Client host rejected: Access denied.

Before telling me this is a blacklist item, it is coming from Thunderbird and not my PC or service provider. Again other email software programs work with no problems on this PC and this started with the latest update. This is a Thunderbird problem. Please help. Dr. C. Lange

After installing the latest version of Thunderbird yesterday (1-27-2024), Thunderbird can no longer send out any emails on my PC using . I am a retired software engineer and contacted my service provider and after 2 hours of trying to find the issue, we have no clue. My email works fine through my service provider using my Apple products, and an alternate mail program on my PC, but not Thunderbird. Everything worked fine before the latest update. I did reboot my computer last night, and was able to send out 1 email, then it again stop sending. The following is the error message it always sends: Sending of the message failed. An error occurred while sending mail. The mail server responded: <ec2-15-181-97-27.compute-1.amazonaws.com[15.181.97.27]>: Client host rejected: Access denied. Before telling me this is a blacklist item, it is coming from Thunderbird and not my PC or service provider. Again other email software programs work with no problems on this PC and this started with the latest update. This is a Thunderbird problem. Please help. Dr. C. Lange

All Replies (1)

more options

Would you please post a screenshot of your SMTP server settings? That may be helpful. Thank you.